A prepositional phrase describes the noun in this sentence the prepositional phrase is "of support" it is describing "letter" so the object of the preposition is "letter"
“A Wrinkle in Time” is a book... is the correct one
He’s discusted because of boo radley
The literary device that the author used in the passage is hyperbole. A hyperbole is a figure of speech that uses extreme overstatement or exaggeration to have a humorous, ironic, or heightened dramatic effects.
Example: I am so hungry I could eat an elephant.
Because he enjoyed writing about romance
